Permanent waving device



w. H. BROWN PERMANENT WAVING DEVICE Filed Feb. 24, 1937 ATTORNEY.

Dec. 28, 1937.

Patented Dec. 28, 1937 UNITED STATES PATENT OFFICE 5 Claim.

This invention relates to permanent waving and has particularreference to electrolytic heating'of wound curls.

The principal object of the invention is toprevent corrosion of the contact between the electrodes, carried by a removable pad adapted to partially surround a wound curl and the contact elements carried by a removable clip connected to a source of current. More specifically stated, the main object is to provide for sealing the point of contact between the contact element carried-by the clip and the electrode element carried by the pad whereby to prevent access of waving solution to such point of contact.

l Other and more limited objects will be in part apparent and in part pointed out hereinafter in connection with the accompanying drawing wherein Fig. 1 is an elevation of a permanent waving assembly including protector clamp, curler rod, electrolytic pad and clip; Fig. 2 is a transverse section taken through the assembly of Fig. 1; Fig. 3 is a fragmentary section of one of the jaw elements shown in Fig. 2 and illustrating the position of one of the sealing members when not in clamping relation to a curl;

Fig. 4 is an elevation of the fragment of Fig. 3

looking from right to left; Fig. 5 is a transverse section through a modified form of the invention showing the electrolytic pad in schematic fashion; Fig. 6 is a section through the clip shown in Fig. 5 looking from the center thereof outwardly and Fig. 7 is a detail fragmentary section through the electrolytic pad of Fig. 5.

35 I indicates a protector clamp which may be of conventional construction such as used in the art of croquignole waving. Carried by suitable cradle elements II on the protector clamp Ill is 40 a curler rod l2 also of conventional construction. Surrounding the curler rod as best seen in Fig. 2 is a wound strand of hair l3 and surrounding the hair I3 is the electrolytic pad indicated generally by the numeral ll. The pad consists of a liquid sustaining sheet l which may be composed of cotton flannel or similar fabric to the outer surface of which are secured electrodes it which may be composed of sheet metal preferably metal foil. The joint between the electrodes Ii may be covered by an element l1 which may be of wax paper or the like to prevent excessive evaporation at that point.

Attached in gripping relation to the wound curl and electrolytic pad is a clip which in the present instance is a two part sectional clip having jam Referring now to the drawing, the numeral i8 secured together by a spring connector I9 adapted to urge them toward each other. Embedded in the jaws I8 are contact elements which project therefrom ina direction to engage the electrodes l6. Surrounding the elements 20 are depressions 2i formed in the jaws 18. The contact elements 20 are secured together by a longitudinally extending bus wire 22 which is centrally connected to a suitable conductor 23 v leading to a source of current. Received on each of the contact elements 20 sufllciently tightly to prevent accidental dislodgement are rubber sleeves 24 which are received in the depressions 2| and which when not compressed are of a length to project beyond the ends of the contact elements 20. When the sleeves are compressed by engagement of the clip on the wound curl and in contact with the electrode It, the sleeves 24 allow the contact elements 20 to project therefrom into contact with the electrodes thereby forming a sealin surrounding relation to the point of contact between the elements 20 and the electrodes i6.

In the form of the invention illustrated in Figs. 5, 6, and '7, the seal is carried by the electrolytic pad instead of by the clip. In this form the mechanism is identical with that of the previously described form with the exception of the electrolytic pad indicated generally by the numeral 25 and the clip which latter comprises a pair of jaws 26 similar to those I8 having conductors 21 connected to extensive contact plates 20.

The electrolytic pad comprises a layer of liquid sustaining material 29 such as cotton flannel to which are secured spaced sheet metal electrode members 30, preferably metal foil or thin sheet metal. A number of conductive granules 3| may be spread upon the foil elements 30 and a coating 32 of soft gum rubber or similar material may be sprayed or otherwise suitably applied as a coating which will hold the granules 3| in contact with the electrodes 30 and which may be perforated at the tips as indicated at 33 to allow the granules 3i to protrude into contact with the plates 28 responsive to pressure when the clip is in curl engaging position. Where the material is not sufllciently readily perforable to allow the granules to force their way through the sealing element under the action of the clip, perforations 33 may be pre-formed by subjecting the, pad or the electrode sheet to pressure in the manufacturing process. In any event the perforations 33 will be present in use. In the production of the pads illustrated in Fig. '7, extensive sheets of foil coated with the granules II and 55 coating 32 may be prepared and then cut up into suitable sizes for attachment to the liquid sustaining sheet 29 in the production of the electrode pads.

While I have shown and described the present preferred embodiments of my invention, I wish it understood that the same may be realized in varying forms'and that I am limited only in accordance with the appended claims.

Having thus described my invention, what I claim is:

1. In apparatus for electrolytic heating of wound curls in permanent waving, an electrode, a contact element for establishing contact between said electrode and a source of current, and deformable sealing material surrounding said contact element, normally projecting therebeyond and adapted, responsive to pressure against the surface of a conductive element, to be compressed enough to allow protrusion of said contact element into engagement with said conductive surface, with consequent formation of a seal surrounding said contact element.

2. In a current supply clip for use in electrolytic heating of wound curls in permanent waving, a jaw element, a contact element projecting from said jaw element and a yieldable sealing gasket surrounding said contact element and being of a length greater than the distance which said contact element projects beyond said jaw element.

'3. In a current supply clip for use in electrolytic heating of wound curls in permanent waving, a jaw element, a contact element projecting from said jaw element and a yieldable sealing gasket surrounding said contact element and being of a length greater than the distance which said contact element projectsbeyond said jaw element, said jaw element having a depression surrounding said contact element and said sealing gasket being received in said depression.

4. An electrolytic heating pad for use in permanent waving comprising, in combination, a sheet of liquid sustaining material, electrode elements secured thereto, a plurality of conductive contact elements in conductive association with said electrode elements and a coating of yieldable sealing material covering said contact elements and having when in use perforations at the ends of said contact elements permitting protrusion thereof for contact with a conductive element.

5. An electrolytic heating pad as specified in claim 4 in combination with a sectional clip having jaws adapted to grip a wound curl, the curl gripping faces ofsaid jaws being provided with extended conductive faces adapted to grip and engage said coating and said contact elements whereby the coating forms a seal surrounding the point of contact between said conductive surfaces and said contact elements.

WILLIAM H. BROWN. 

